Python OSS Engineer
Listed on 2025-11-16
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Software Development
Software Engineer, AI Engineer
About Lang Chain
Lang Chain was founded in early 2023 to help developers build context-aware reasoning applications. Lang Chain, open source software, is a framework that gives developers the building blocks to create production-ready applications with LLMs. Lang Smith is our commercial, all-in-one SaaS platform that enables the end-to-end, development workflow for building LLM-powered apps. Lang Smith is now trusted by the best teams building with LLMs, at companies such as Airbnb, Byte Dance, Klarna, Google, Meta, Home Depot, and our 80+ paying enterprise customers.
Backed by some of the best venture capitalists, Benchmark and Sequoia, we have 10x’d our revenue last year and have big ambitions and are set up to build an enduring business.
About the role
In person 5 days/week in San Francisco, CA or Boston, MA (SF preferred)
We’re looking to add a core maintainer to the Lang Chain team. This person would be responsible for maintaining and improving the Lang Chain Python package.
Improving the core abstractions and runtime of the langchain and langgraph packages
Improving documentation
Answering user questions and resolving issues
Use langchain to build example applications
How to be successful in this role
5+ years of software engineering or applied machine learning background
Have strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non-technical stakeholders
Can thrive in a fast-moving environment. Views unstructured environments as an opportunity to figure out the most impactful work and define the future success of the company
Are ownership-minded. You excel at managing your work efficiently and effectively without the need for close supervision
Compensation & Benefits
Competitive salary and equity stake for role and stage of company. Commensurate with experience.
Annual salary range: $115,000-$155,000 USD, $145,000-$195,000 USD for Senior Engineer candidates
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